Nonmetallic ferrule for caps of containers



Dec. 11, 1945. F. MALLGRAF NONME'IALLIC FERRULES FOR CAPS OF CONTAINERS Filed May 25, 1942 2 Sheets-Sheet 1 JNVENTQR FERD/NHND MFIL'LERHF BY Z g 50 @Qnu HTTORNEY Dec. 11, 1945. F..MALLGRAF NONMETALLIC FERRULES FOR CAPS 0F CONTAINERS Filed May 25 1942 2 Sheets-$heet 2 IN VENT OR.

F ERU/NHND MHLLERHF arrow Paterlted Dec. 11, 1945 UNITED STATES PATENT OFFICE NONMETALLIC FERRULE FOR CAPS OF CONTAINERS This invention relates to non-metallic caps or closure means for containers, particularly to the forming of strips of paper or paper-board into laminated ferrules, in which the screw threads or embossings are formed therewith.

The important feature of this invention, is the adaptability for making the non-metallic flange of the cap member from heavy paper, paperboard or any other suitable thin flexible material, with the necessary width similar to a tape or strip, which may be fed from a roll or in cut lengths in between the forming male and female rolls that form the necessary threads on a portion of the strip, which is thence wound or rolled into a ferrule by ring forming rollers, for example, into a three ply thickness, glue being applied on a portion of one side of the strip, so after the winding and rolling operation, the formed non-metallic ferrule or ring with its threaded portion is dislodged from the ferrule forming roll, after which it drys and becomes hardened, making it firm and strong, due to the laminated spiral or wound portions, glued or secured otherwise together, as may be desired.

Another important feature of this invention is that the unglued portion of the strip forms the outer surface of the screw ferrule or ring member, in which this exposed outer surface may be finished in any desired color or decorative de sign, which may or may not correspond with the top cover member secured onto the ferrule that forms the cap member.

Another important feature of this invention, is the variable means of applying and securing the top cover member, either separately or forming it from the paper-board strip itself, in the latter integral form' the strip is increased in width so the added portion may be suitably out after the forming operation of the ferrule, to form the top cover portion of the cap.

Another feature of this invention, is the adaptability of applying a knob head member of any suitable material, for example, of wood, as a part of the finished cap, in which the screw ferrule is inserted securely into a counterbore or recessed portion of the knob head member.

Other features of this invention will appear as the description proceeds in the following specification, accompanied by the annexed drawings, in which Figure 1 is a plan view of the threaded side of the paper-board strip of this invention.

Figure 2 is a similar view showing the threads broken in staggered-like formation.

Figure 3 is a side elevational view of Figure showing the raised threaded portion on one end of the strip.

Figure 4 is an enlarged cross sectional View of the strip before forming the thread portions therein.

Figure 5 is a similar View of the same paperboard strip shown in Figure 4 formed with the threaded portions.

Figure 6 is a similar view of the same strip after the threaded forming operation has been formed into a ferrule, and shows a fragmentary portion thereof laminated, the threads synchronizing into each other.

Figure 7 is a similar view showing the strip now wound into a 3-p1y laminated ferrule with unthreaded portion on the outside thereof.

Figure 8 is a sectional view of the finished ferrule member made up from the paper-board strip just described.

Figure 9 is a perspective view of the threaded paper-board ferrule, with the end of the wound strip turned out showing the termination of the glued side of the strip.

Figure 10 is a reduced sectional view showing the cover member secured to the top of the ferrule by a gummed paper shown in dot-dash lines, which completes the cap element.

Figure 11 is a perspective View of the cap element in Figure 10.

Figures 12, 13 and 14 show in sectional views different knob head caps provided with the threaded ferrule of this invention.

Figure 15 shows one laminated portion threaded with the two outer laminated portions without any threaded portion.

Figure 16 is a sectional view of the threaded paper-board ferrule turned or beaded over to secure the sunk-in cover member.

Figure 17 is a similar View with the cover member formed flush with top of the ferrule.

Figure 18 is a perspective View of cap member shown in Figure 16.

Figure 19 is a sectional view of an alternative ferrule form showing the threaded portion wound on the outside thereof.

Figure 20 shows diagrammatically one method of making and forming the threaded paper-board ferrule from a roll, in which cutting means is embodied at the ferrule forming rollers.

Figure 21 is a plan view of Figure 20.

Figure 22 is a plan View of a cut strip that may be fed in between the thread forming rollers, that eliminates any cutting operation as shown in Figure 20.

embossing has been formed in the chuck-die device.

Figure 27 is a, similar fragmentary view that is shown in Figure 21, of the ferrule formingrollers, whereat, threaded or embossed portions may be formed with means provided therewith.

Figure 28 is a fragmentary view of a blank or sheet of paper-board in which'the threaded portions, embossing or indentations are formed therewith, after which. the stripsare cut.

Referring to the" drawings, the numeral I'designates a strip of paper, paper-board, 'orany othersim'ilar non-metallid'fiexible ma-terial,"-h'aving""threa'ded portions' 2 formed on a portion thereof, as shown in Figure 1, With-flatfiportion 2a'fbetween the threadsfto provide means for glueing' or cementing "the "laminated .portions, which may be 2 ,ply or mor.e,i,pre'ferably"3 'ply thickness, or may be ,provided with broken threaded portions ordepressions '3, as shownin Figure 2. vAfglue, gum'or cement'surface 4 is provided toth'fiat surface 2a of the underside 5, the threaded portions 2 being raised on' the-surface or side 6 of the stri "The "above "strips "of tape-like paper or paperboard l, are productively formed into'threaded lair iina'ted'ferrules or rings'F '.as shown clearly inFigur'es 4to'11', inclusive, after whichthey may be formed into cap members C, by means of a cover member" '1 and ,gum ,paper 18, as shown in rings F may be secured ontoashoulder extended portion 9 aslshown in Figure '12, or may besefc'ured into a counterboredor recessed portion to of anon-metallic iknob'head member I I, thereby providing a strong andlnovlel cap memberiKC.

In Figure '15, .the "threaded portion 2 .may-be universal, that may screw onto any'ithreadedportion of ,a container. In .the origina 1 threaded portion- '2 a flat surface 20,- between the threads provides gluing and securing means to the laminated portions.

"'LInFigures'16 and118', a; cover member 12 may be inserted and secured inasdnkqnmann'er, by beading or rolling over "the iupp'eredgefid-"of the ferrule 'F' as shown.

*InFigure 17 the cover member *l2'-'may'-be made flush in which a'recessed portion '15- of the ferrule F, 'allows the-"member l2' "to "be snappedtherein and when-coveredby the 'finish paper '8, as shown =in'Figure "11,- provides a-durable strong cap structure, as the coyer'moeinber 1 may be *twisted' o'ff if the turning: 0f the screw p -m m r 'czirrforc'ed too strongly.

In Figure 19 the ferruleiF -sh'ows thelthreaded portion 2 onfthe' toutsideathereof; which 'may i be adopted .in-- some :capfeaturesiona cork or stopper-member.

In Figures e20 ande2l; a diagrammatic alayout shows the rmeans-rof feedingla tapeAike-strip" of paper or gp'aper-lboard ll b from za roll R'-inlbetween a male. rollerl2fl andaiemale roller 21 thatforms the partial threaded .portion 2 ,of the strip over the gluing roller 22 towards "the ferruleor ring "suitablemeans, .as fen example by a forked lever 29 operated "by "an suitable power'means.

A pulley 39 on the shaft 3| may be driven by a belt --not shown, for rotating the roller 23 to form the desired spiral layers of laminations forming the =-ferrule or ring member F.

In Figure 20, the gluing roller 22 is provided -'with-a-cam-o0ntro1 22a that lowers and raises the FiguresTlO and 11. The threaded ferrules or lever-22b and roller 22 from strip or tape I, thereby omitting gluing for any desired portion of the strips :I, or for gluing the surface 5, or any portion of thesurface 7,5, iflsoldesired. Glue isnot applied to 'thethread'ed portions}, 21, 2" and 27",, but onl onto "theTflat surface 2a adjacent thereto. However, the securing together :of '.the ferrule is optional, as whereint'he threadeduportion is made universal, asishown .ifFigure 115, whereat [the gluemay be. app1ie,d .to the threaded portion "2a"..

"In'Figure23 an integral form of. a .thre'ad'ed ferrule'FC and top cover .portion la, formed from the added extended width '70 as indicatedin dotdash lines, into a'sector'likefformation as shown in Figure "23a, folded .over portion may or ,may riot'be scoredalllof whichv is,optional. InTFigure- 25 is.alchucldie' devioeuCD for .al ternatively forming threads into the .ferrule Eh, after the strips 1 have .been' formed into a laminated formation, .as -shown .in Figure 19, without the threads-f2 as here'i nbefore Ldescribed and shown 'in the drawings. The tapereddies. '35 being forcedout and'in .bythe plunger .35 and -its wedging endsj'31, springs ..oontrolling .said .operation .of the grooves TED-that formlthethreads- .2 or embossing 2,these"dies may rotate slightly, about!30, to .make. vthe .fiull vcontinuous thread portion, and'the embossings 3 :are .so that .they form the threaded or embossed portion fiaaas shown linlFigure 28. These continuous-threaded portions .2 .areior. small size-threadsso the .rolling may. -be .more convenient, .anduif not 1 then. these continuous I threadsnare .to. be .formed .after the ferrule has been formed,v ,as lhereinb.ef.ore..-described.

InVEigurei27. is shownlanother .methodiof -formingthe threads .2 orein'bossings ,3,v whereb .the ferrule forming rollers f23f, I24..and v24W may be provided with female and- :male portions, .20 .and 20,- which may form a large .size .sing1e...thread 2 orembo'ssings '3 inathe ferrule F' .IThe-rollers 24' and 2 1" must be movedaway fromthe formed ferrule when the plunger r3 lforces. finished ierrules v off. the. split onehuok-roller .23

.If soldesired, the. ends OI -the :laminated/strips may .meetin a..flush-.like .manner .to form the ferrule as. shown in Figure 26, and gummed label or paper band may be secured'thereat,- .alluof.

whichlis according to-the =.outer .finishdesiredfor the --capmember shownain Figure 16, vwherewith the ferrule .member becomeslthe. integral :fiange portion of the cap member F. Embossed portions zmay be monstrued as portions raised priindentationssuch-as crimping.

It is to-be .unclerstood thata-the gluing-oneseeuring together of. thelaminatedgportiong may-\be accomplished .by an other suitable meansethan shown in the drawings and described hereinbefore, such as by stapling, or interlocking the ends of the strips thereof, just so the ferrule is formed solidly in a durable and firm manner.

I do not confine myself to the drawings, which are not exactly true, possibly exaggerated in some parts, as they merely disclose the principle of the non-metallic ferrules that finally becomes the securing flange of any cap or stopper, which in time of war, the production of metallic caps being prohibited, paper-board caps are a necessity.

It is to be understood I may alter any part of my invention, providing same comes within the scope of the appended claim.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States of America, is as follows:

A non-metallic cap for containers of the character described, comprising a three layer ferrule member having two inner layers and an outer layer and being formed from a tape-like strip of paper-board having laterally spaced thread portions pressed in one end of said strip with fiat surfaces between said thread portions, the other end of said strip being without any thread, said fiat surfaces between said thread portions having glue applied thereto, said strip being wound to form said three layer ferrule member, said thread portions being in said two..inner layers with the thread portions of each of said two inner layers being in registration with each other, and said outer layer having no thread and providing means for any suitable covering for the complete cap, said glue securing said two inner layers and said outer layer together.

FERDINAND MALLGRAF. 

